Lavinia, Azorius Renegade + Possibility Storm

Prerequisites

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Steps

1. 1Whenever an opponent casts a spell from their hand, Possibility Storm triggers, exiling the spell and allowing the player to reveal cards from the top of their library until they reveal a spell that shares a type with the exiled spell, and cast it without paying its mana cost.
2. 2If the opponent chooses to cast the spell, Lavinia triggers, countering that spell since no mana was spent to cast it.

Effects

• Counter all spells opponents cast from their hands
• Lock